Nut-lock.



G. D. LAWSON & A. WHEELER.

7 NUT LOOK. APYLIOATION FILED MAR. 14, 1908. RENEWED APR. 5, 1909.

.gaaagg, Patented N0v.2,1909.

2 SHEETS-SEEET l.

nvenfow G. D. LAWSON & A. WHEELER.

NUT LOOK. APPLIUATION FILED MAR. 14, 1908. RENEWED APR. 5, 1909.

Patented Nov. 2, 1909.

2 SHEETS-SHEET 2.

avwe'wtow ao ge ZZLau/ $011,

4 dim raw M bee'ler.

- be placed below the UNITED STATES T OFFICE.

GEORGE D. LAWSON AND ANDREW WHEELER, OF ROSE HILL, VIRGINIA.

NUT-LOOK.

To all whom it may concern:

Be it known that we, GEORGE D. Lawson and ANDREW United States, residing at county of Lee, State of Virginia, have invented certain new and useful Improvements in Nut-Locks; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as art to which 5 will enable others skilled in the it appertains to make audatse the same.

This invention relates tti-certain new and useful improvements in nut loclts the object being to provide a fastening whereby nuts subjected to jotting are securely locked ward rotation, and embodies a spring washer, a nut, and a bolt of peculiar constructimi, as will be described more fully hereinafter.

In the accompanying drawings Figure l rail joint pro- Fig. 3 Fig. 3 Shows 1g. 4 shows a shows a sectional view of a vided with one of our n'ut 'l'ocks. shows an end view of the nut. a face view of the washer. plan view of the bolt as used in our invention. Fig. 5 shows a sectional view of a rail joint provided with washer, while Fig. 7

is an enlarged detail of the spring washer.

In fulfilment of the aim of our invention we employ a bolt 1. of any conventional form provided with a head dinally with the groove Fig. 4. In connection w 4, as disclosed in base surface 5, as disclosed in Fig. 2.

by means of one of our structed bolts 1.

5.) and 11 of which downwardly, ing lips adaptedto work into the seatings of the ratchet faced nut 8 and the fish plate.

As shown in Fig. 7 the spring washer at each end is provided w it '13 within which the spring ends 1) and I] are held when the washer is compresswl.

In Fig. 5 we have disclosed the and the nut 8. If desired, the w head 2 of th e'bolt. As disclosed in Fig. 3 thetop portion of \VHEELER, citizens of the Rose Hill, in the i and jarring movements against accidental bacltour nut locking device. Fig. 6 shows a bottom view of the spring and longituith this bolt 1 we use a nut 8 provided with the ratchett'accd 7 h a seating 12 and 3 spring--. washer as interposed between a fislrplate a ash'er may Specification of Letters Patent. Application filed March 14. 1908, Serial No. 421,164. Renewed April Patented Nov. 2, 1909 5, 1909. Serial No. 488,070..

' the spring lip 9 is provided with a tab 15 so arranged that this engaging end of the spring washer may be forced backward in unthreadi'ng the nut. The coil portions of v this spring washer are provided with a spline 7 adapted to work and slide within the groove 4 of the bolt to hold this washer against rotation.

In securing the fish plate or other objects between the bolt head and nut the spring 5 washer is interposed and permits -aready locking rotation of the nut. I

\Vhen the spring washer is fully compressed the lip 9 is in engagement with the ratchet under face of the nut while the lip 11 is in spring pressed engagement with the fish plate so that the lip 11 holds the washer l against backwardrotation, while the 1i 9 prevents the nut from backwardly rotating. Now, when it is desired to release the sprin held nut the operator grasps the tab 15 and forces the engaging end 9 into the seating 12 so that this end 9 is carried out of the ratchet groove or seating within the nut enablingthe operator to backwardly rotate l the nut.

This construction prevents any accidental backward rotation of the nut while providing means whereby the nut may be readily removed without destroying any part or parts of the operatingmechanism.

Having thus described our said invention, what we claim as newand desire to secure by 5. Letters Patent is p 1. In alocking mechanism of the character described, the combination with a bolt provided with a longitudinal groove, of a nut. having a ratchet under-face, and a spline provided coil washer, one end of which is bent to provide an engaging lip to be held in spring pressed contact with the ratchet undert'acc of said nut, said washer-having a seat adapted to receive said lip, the lip end of said washer having a project-ing tab, all elrranged assett'ort'h.

2. A. locking washer of convolute form, 1 the ends of the "washer being reduced, and.

theflhody of the washer directly beneath-each free end portionbeing reduced in thickness to a degree to permit the free end portion to lie below th outer face of the adjacent thickened portion, each extremity of the washer being turned outwardly.

3. A locking washer of convolute form, the ends of the washer being reduced, and

the body of 1 the washer directly beneath In testimony whereof we aflix our signeeach free (and portion being iiedlced in hiektures, in presence of two witnesses.

nesstoa'e reeto rmitt e reeen por-- tionto lie low fi outer face of the ad- I 5 jacent thickened portion, each extremity of the washer being turned outwardly, the Witnesses:

washer at one extremity having a radiat- J. W. LAwsoN,

ing THOMAS Cops. 

